Victor Forge
The human tongue is a muscular hydrostat, a mass of muscles covered by a mucous membrane, which can contract and relax quickly, allowing the tongue to assume many shapes and positions. The tongue comprises extrinsic and intrinsic muscles. The extrinsic muscles include the genioglossus, styloglossus, hyoglossus, and palatoglossus muscles. The intrinsic muscles consist of superior and inferior lingual longitudinal muscles, the transverse lingual muscle, and the vertical lingual muscle.
| Characteristics | Values |
|---|---|
| Number of muscles | 8 |
| Muscle types | Intrinsic and extrinsic |
| Extrinsic muscles | Genioglossus, Styloglossus, Hyoglossus, Palatoglossus |
| Intrinsic muscles | Superior and inferior lingual longitudinal muscles, transverse lingual muscle, vertical lingual muscle |
| Functions | Aids in the process of swallowing and manipulation of food before ingestion, facilitates the production of speech, essential for employing the sense of taste |
Explore related products
What You'll Learn
The tongue is a muscular hydrostat
The tongue is a muscular organ in the mouth of a typical tetrapod. It is a muscular hydrostat, which means that it is made up of several muscles that intertwine to create a flexible matrix. This is similar to an octopus's tentacles or an elephant's trunk. The human tongue has eight muscles, and it is divided into two parts: the oral part at the front and the pharyngeal part at the back. The oral part is the visible part of the tongue situated at the front and makes up roughly two-thirds of its length. The pharyngeal part is the part closest to the throat, making up roughly one-third of its length.
The tongue is an essential organ that aids in the process of digestion by manipulating and moving food particles during mastication and swallowing. It is also vital in producing speech and employing the sense of taste. The upper surface of the tongue, or the dorsum, is covered in taste buds housed in numerous lingual papillae. It is kept moist by saliva and is rich in nerves and blood vessels. The tongue also serves as a natural means of cleaning the teeth.
The muscles of the tongue function together to allow for a variety of shapes and functions, facilitating the production of speech and aiding in the process of swallowing and manipulating food before ingestion. The tongue must elevate posteriorly to push the food bolus toward the hypopharynx and oesophagus for efficient swallowing. The bending of a muscular hydrostat is particularly important in animal tongues, providing the mechanism by which a snake flicks the air with its tongue to sense its surroundings.
The muscle fibres in a muscular hydrostat are oriented in three directions: parallel, perpendicular, and oblique to the long axis. The muscles parallel to the long axis are arranged in longitudinal bundles, and the more peripheral these are, the more elaborate bending movements are possible. The muscles perpendicular to the long axis may be arranged in a transverse, circular, or radial pattern. A transverse arrangement involves sheets of muscle fibres running perpendicular to the long axis, usually alternating between horizontal and vertical orientations. A radial arrangement involves fibres radiating out in all directions from the centre of the organ. A circular arrangement has rings of contractive fibres around the long axis and is found in many mammalian and lizard tongues, as well as squid tentacles.
Skinny Girls' Guide to Building Muscle: Effective Strategies
You may want to see also
Explore related products
$9.59 $10.79
The genioglossus muscle
The human tongue is made up of several muscles that work together to enable a variety of shapes and functions, including the production of speech and the manipulation of food before ingestion. One of these muscles is the genioglossus muscle, which is part of the group of extrinsic muscles of the tongue. The other extrinsic muscles are the hyoglossus (chondroglossus), styloglossus, and the palatoglossus. These extrinsic muscles are all located close to one another and typically function as a unit, although each muscle also has its own individual function.
The muscle's activity varies during obstructive events, is influenced by the sleep-wake state, and differs between patients with OSA (obstructive sleep apnea) and controls. For example, when genioglossus activity is reduced due to muscle relaxants or dense airway anaesthesia, airway collapse is promoted, and OSA is either worsened or induced in individuals who usually only snore. Conversely, electrical stimulation of the genioglossus muscle or the hypoglossal nerve that innervates it can improve airway patency.
Muscle Aches and Illness: Understanding the Connection
You may want to see also
Explore related products
The styloglossus muscle
The human tongue is made up of various muscles that work together to enable a variety of shapes and functions, including the production of speech and the manipulation of food before ingestion. One of these muscles is the styloglossus muscle, which is a bilaterally paired extrinsic muscle of the tongue.
The function of the styloglossus muscle is to elevate and retract the tongue, and it works in coordination with the other extrinsic muscles of the tongue, including the hyoglossus muscle, the genioglossus muscle, and the palatoglossus muscle. The styloglossus muscle causes the lateral margins of the tongue to curve upwards, forming a furrow to permit swallowing following mastication of food particles.
Running for Muscle Gain: Is It Effective?
You may want to see also
Explore related products
The tongue's role in speech
The tongue is a muscular organ that plays a crucial role in speech production. It is composed of several muscles that work together to produce a wide range of shapes and movements, enabling us to articulate words and create different types of sounds. The tongue's flexibility and agility allow it to move rapidly and coordinate with the lips and teeth, contributing to our ability to speak clearly and at a fast pace.
The tongue is responsible for shaping the sounds that come from our throat into distinct words. This intricate process involves the tongue's complex movements in relation to other parts of the mouth, such as the lips and teeth. By manipulating the position and shape of the tongue, we can produce a variety of sounds, which form the basis of speech. The tongue's mobility and range of motion directly impact our speech, with specific tongue movements corresponding to different sounds and words.
The tip of the tongue is highly sensitive to touch, aiding in the detection of food particles in the mouth. This sensitivity also plays a role in speech, as it allows for precise coordination with the lips and teeth during the production of sounds. The tongue's ability to make rapid and intricate movements is essential for clear and fluent speech. It can produce over 90 words per minute, showcasing its speed and agility in forming words and sounds.
Additionally, the tongue is involved in other vital functions, such as swallowing, sucking, and tasting. It helps manipulate food during mastication, turning it into a swallowable form and initiating the swallowing process. The tongue's versatility extends beyond speech, contributing to essential activities necessary for our survival and daily functioning.
Understanding the tongue's role in speech is crucial, especially when addressing speech disorders. Speech therapists can provide valuable insights into the tongue's functions and help individuals overcome challenges related to speech and articulation. By comprehending the intricate relationship between the tongue's movements and speech production, we can better appreciate the tongue's significant role in our ability to communicate effectively.
Glutes Muscles: What Are They and What Do They Do?
You may want to see also
Explore related products
Tongue-tie
The human tongue is a muscular organ that aids in digestion and facilitates the manipulation and movement of food particles during mastication and swallowing. It is also essential for producing speech and taste. Tongue-tie, also known as Ankyloglossia, is a condition where an abnormally short lingual frenulum restricts the movement of the tongue. The frenulum is a fold of tissue that connects the underside of the tongue to the floor of the mouth, and in individuals with tongue-tie, it can be too short, tight, or thick, limiting the tongue's range of motion.
The symptoms and signs of tongue-tie may vary with age. In newborns, the primary concern is adequate feeding, while in older children, speech and articulation may be affected. Diagnosis of tongue-tie involves examining the frenulum and assessing its impact on tongue movement and speech. Treatment options include surgical procedures such as frenotomy, frenulectomy, or frenuloplasty, which involve cutting, dividing, or lengthening the frenulum to free the tongue. However, it is important to note that not all cases of tongue-tie require treatment, as the frenulum may stretch enough as the child grows, allowing the tongue to move normally.
In some instances, tongue-tie may reoccur after treatment, and scarring may also be a possibility. Doctors are unsure of the exact cause of tongue-tie, but it is known to sometimes run in families and is more prevalent in boys than in girls. If you have concerns or notice potential symptoms of tongue-tie in yourself or your child, it is essential to consult a healthcare professional for a proper diagnosis and treatment plan. They may refer you to specialists, such as a speech-language pathologist, to address any specific concerns related to tongue-tie and its impact on speech and feeding.
Muscle Injury Recovery: The Regeneration Process Explained
You may want to see also
Frequently asked questions
The tongue is made up of many muscles, both extrinsic and intrinsic.
The extrinsic muscles of the tongue include the styloglossus, hyoglossus, genioglossus, and palatoglossus.
The styloglossus muscle raises the tongue and retracts it back into the mouth. It also causes the lateral margins of the tongue to curve upwards, forming a furrow to permit swallowing.
The intrinsic muscles of the tongue include the superior and inferior lingual longitudinal muscles, the transverse lingual muscle, and the vertical lingual muscle.
